Fix Windows build

Author: jmao-denver

src/main/c/jni/org_jpy_PyLib.c

@@ -58,8 +58,11 @@ static int python_traceback_report(PyObject *tb, char **buf, int* bufLen);
 #define JPy_GIL_AWARE
 
 #ifdef JPy_GIL_AWARE
+#if defined(_WIN64)
+    #define JPy_BEGIN_GIL_STATE  { PyGILState_STATE gilState = PyGILState_Ensure();
+#else
     #define JPy_BEGIN_GIL_STATE  { if (Py_IsFinalizing() != 0) pthread_exit(NULL); PyGILState_STATE gilState = PyGILState_Ensure();
-//    #define JPy_BEGIN_GIL_STATE  { PyGILState_STATE gilState = PyGILState_Ensure();
+#endif
     #define JPy_END_GIL_STATE    PyGILState_Release(gilState); }
 #else
     #define JPy_BEGIN_GIL_STATE